LeBron was talking about the USA-Lithuania game from the Olympics
when he went off of his tangent:

"I sent an e-mail about this to Warren Buffett. I'm a kid
from Akron who lived in poverty for a long time, and I sometimes
send financial statements to one of the richest guys ever. It's
kind of scary. I'm like, 'Why is he talking to me?' But anyway,
the e-mail was about representing your country. It's not
about sports. It's about everything else. It's about everybody
who has ever walked on U.S. soil. You start to remember the lives
that have been lost, the troops, the real superheroes. That's
what went through my mind. You talk about a burden, or a weight,
it gets no heavier. And then what went through my mind was,
you're here for a reason. It's time to make a play.

The quote is kind of ambiguous. LeBron just slips the financial
statement thing in there without much explanation.

But the bigger point is that LeBron has casual e-mail exchanges
with Warren Buffett.